Supermarket cashiers

When at the supermarket are opened only 2 cash people waiting in the front approximately 12 minutes. How many will shorten the average waiting time in a front where supermarket open another three cashiers?

Correct answer:

x =  7.2 min

Step-by-step explanation:

2:(2+3)=d:12  d=12 22+3=245=4.8 min  x=12d=124.8=365 min=7.2 min



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar







Tips to related online calculators
Check out our ratio calculator.
Do you want to convert velocity (speed) units?
Do you want to convert time units like minutes to seconds?

Related math problems and questions:

  • Ten cashiers
    pokladna Ten cashiers are open at Tesco. Customers wait an average of 15 minutes. How many other cashiers have to open to reduce the waiting time by 4 minutes?
  • Cable car
    lanovka The cable car will carry 1280 passengers in 40 minutes. How many people will be transported in 2.5 hours?
  • Driver
    truck I drive at an average speed of 70km/h, I drive 10 thousand km. How long did it take me?
  • Hurry - rush
    bus At an average speed 7 km/h, I will come from the school to the bus stop for 30 minutes. How fast I need to go if I need to get to the bus stop in 21 minutes?
  • Ratios
    gule Reduce the numbers: 50 in a 1:2 ratio 111 at a ratio of 2:3 70 at 10:50 560 at a ratio of 3:8
  • The orchard
    jablone 4 temporary workers harvested the orchard in 9 days. How many temporary workers we need for six days?
  • Cook on gas
    lpg The gas cylinder will last for 30 weekends for 2 hours of daily cooking. How many days will we be able to cook on a new cylinder when we cook for 3 hours a day?
  • Painters
    time Ten painters paint the school in 20 days. How many days do four painters paint the school at the same pace of work?
  • Two brothers
    mapa_ta3 The two brothers were to be divided according to the will of land at an area of 1ha 86a 30m2 in a ratio of 5:4. How many will everyone get?
  • Five pumps
    nadrz The water tank is filled with two pumps in 48 minutes. How long would it take to fill it with 5 same pumps?
  • Working time
    work At 10 hours work shift, work is done in 16 days. How many days will the work be done at 8 hours shifts?
  • Pumps
    pumps After the floods, four equally powerful pumps exhausted water from the flooded cellar in 6 hours. How many hours would take a drained out with three equally powerful pumps?
  • Weighted harmonic average
    workers Ten workers will do some work in 2 minutes, five workers in 10 minutes and three workers in 6 minutes. How many minutes per average worker per worker?
  • Hectares of forest
    stromy 12 workers plant 24 ha of forest in 6 days. In how many days will 15 people and 12 people plant the same area?
  • Six workers
    workers Six workers earned a total of CZK 12,600 per week on the construction site (5 working days). How much do 7 workers earn in 10 days with the same daily average salary?
  • Five combers
    permutations Five combers harvest 12 rows of strawberries in 4 hours. How many rows of strawberries will two combers harvest in 10 hours?
  • Five mechanics
    car Five mechanics will make a car for some time. How many cars can 30 mechanics produce at the same time?